Joseph kolzee



Dm. E Z L O K J.

TBLGRAPHIC REPE ATER.

No. 379,208. Patented Mar. 6, 1888.

PAIHMIQY N, FErzn-s. www, washing. u c.

UNiTnD STATES PATENT Ormea.

JOSEPH KLZER, OF DUISBURG, PRUSSIA, GERMANY.

TELEGRAPHIC REPEATER.

SPECIFICATION forming part of Letters Patent No. 379,203, dated March 6, 1888. Application tiled August 14, 1884. Renewed November 26, 1887. Serial No. 256,252. (No model.)

To all whom it may concern.- A

Be it known that I, J osEPH KLZER, a subject of the King of Prussia, residing at Duisburgon-the-Rhine, in the Kingdom ofPrussia, in the Empire of Germany, have invented new and useful Improvements in Electrical Telegraph-Apparatus, of which the following is a specification.

This invention relates to telegraphic apparatus whereby messages can be transmitted from a remote station in the main line to a remote station in a branch line, from a remote station in a branch line to a remote station in the main line, and also for sending messages from a station on a branch line to a home or receiving station that has been disconnected from the main line or electrical circuit, and also for transmitting messages between main lines.

The invention consists in polarized relays of special construction and an arrangement of circuit-closing keys, commutators, registers, and main-line and branch-line electrical circuits, whereby messages can be transmitted in the manner above briefly described, all of which is more fully pointed outin the following specification and claims, and illustrated in the accompanying drawing, in which the gure is a view showing the arrangement of parts for transmitting messages from stations in a branch line to stations in a main line, and vice versa.

In the drawing, the letters R R2 indicate the two Morse relays. S S2 are the registers; U', U2, and U3, the commutators; T T2, the finger-keys, G/ G2, the galvanometers; B, the local battery connected with the branch line, and B2 is the battery connected with the main line.

O W is the main-line circuit, and N the branch-line circuit.

The armature-lever C of the relay R in the circuit of the branch line N is provided with an extension, C', having thereon a head-piece, a, which projects downward and is bent upward so as to form a hook, on the end of which is an upwardlyextending contact, L, which maybe formed bya small metal screw.

iis an elastic steel spring -or arm, which is secured by small screws to the armature-lever C, but is separated therefrom by a plate or layer, o, of insulating material. When in its normal position,the spring-arm bears with its ver by an insulating-plate, e.

free end against the contact 7c of the headpiece a, so that the circuit is closed.

Z Z are the contacts or stops.

j is a button or stud which projects from the insulating layer o and forms a stop for the spring-arm t', so that its entire surface willnot bear upon the insulating layer.

The spring-arm is connected, by a spiral spring, g, to a binding-post, h., insulated from the relay R', the said spiral spring being made of very thin wire and very elastic in order that it can participate in the movements of the armature-lever C without exerting any appreciable force upon the same.

The armature-lever nu ofthe relay R2, which is introduced in the main-line circuit, is similarly constructed and arranged as lever C of relay R. In its normal position the armaturelever C is against stop Z, and armaturelever n n is against stop d', in which position they are respectively drawn by springs z e. On this armature-lever is secured a metallic contact-plate, m, which is separated from the lecontact-plate conducts the current departing for the circuit N, which enters over the contact d', after the falling back of the armature, directly through spring g', which is attached to the plate by screw s, and to a screw, h, and the current does not pass through relay R',

This metallic v but is led directly to the branch-line circuit N.

The finger-key T is provided witha broken working contactplate, r'r2, as shown, of which the smaller section at theleft is connected with the contact d' of relay B2, and the longer section on the right, being the one with which the key comes in contact when depressed, is connected with one pole of the battery B2.

The back plate of commutator U3 is broken and may be electrically joined by means of a plug.

For transmitting messages from the main line O W to the branch line N, and vice versa, the holes 1 are plugged in the commutators U U2 U3 and in the finger-key T. The course ICO Q l evaaoe U2, over plugged hole 1, to nger-keys T2, andv from thence to the point W of the main line. W'hen the circuit is established, as just described, the armature-lever of the relay R2 and the register S2 are attracted by the respective magnets, and the lever of relay R2 is held against thestop or contact d, as shown in Fig. l.

The course of the current in the branch line d N is as follows: From t-he point of the wire through the galvanometer G', the finger-keys T', the commutator U, (over plugged hole 1,) coils of relay R', the commutator U3, (middle plate,) the armature-lever un' of the relay Ri, the contact orstopd,commutatorU2,frontplate, and then to the ground. If now the main-line circuit is broken by depressing a ringer-key, the writing apparatus S2 and the relay R2 become devitalized, and the armature-lever n n' of thelatter falls against backstop d', so that communication with the ground is interrupted at d, and the circuit of batteryB is closed, as follows: One pole oft-his battery is connected with the earth, causing the current to pass from the other pole to the finger-key T through the plugged hole o', and from thence to the relay R2, through the mediuln of stop d', contact plate m, spring g', and bindingscrew h,to comrnutator U3, over plugged hole l therein to commutator U', over plugged hole 1 to fingen key T' through the body ofthe key to the back plate to galvanometer G', and from thence to the branch line N, to actuate the register at a distant station. The current cannot deviate from commutator U to the relay R' to the middle plate of the commutator U3, through armature-lever n n' to the stop or contact d to the earth,because the said armature-lever n n is in contact with stop d' as long as a departing current is circulating in the wires, and the circuit to the earth is consequently interrupted.

If the remote station of the branch-circuit N sends a current into the circuit, the current passes through armature-lever n n' and stop d to the ground,thearmaturelever C of the relay R is attracted, and the arm t' of said lever is brought into contact with stop orcontact Z,so that the local current, from contact Z', the bat- 'tery B2, commutator U2, relay R2, bindingscrew h, spring g, and spring-arm i, is closed. The armature-lever C being attracted, as before stated, by the relay-magnets, the mainline circuit is broken, since the spring-arm t' is thrown out of contact with contact k.

Since the armature-lever n n' of the relay R2v remains in contact with stop d', a disturbing current cannot enter into the branch-line circuit N, as the local current of battery B2 (passing from stop or contact Z' to spring-arm i, in the manner before described) is closed before the main circuit O XV is broken, and the communication with the ground is always maia tained at stop d. If the current ceases in the circuit N,the armature-lever C falls away from by the contact k, whence it closes the mainline circuitO W, after which the local current from battery B2 is broken. An uninterrupted circuit is maintained through the bobbins of relay R2 during the entire period in which the brauch circuit is in operation, because the local current is always closed previous to the breaking of the main-line current, and the mainline current is closed before the local current is broken. The armature-lever n n'is consequently always attracted and in contact with contact or stop d, by which connection with the ground is always maintained on one over plugged hole 2 therein to finger-key T2,

and from the back plate of key-plate to W'. The armature-lever of the relay R2 falls from stop d, since no current now circulates through the bobbins, because the plug of the commutator U3 has been removed to hole l therein, and the circuit is thus broken for the departing current. The arriving current of the branch circuit, on the contrary, since its connection with the ground is also broken at stop d, flows through the commutator U3 over plugged hole therein to thev ground.

If a remote station on the branch line N calls, the relay R' is put in motion and the local current from battery B2 is closed. The relay R2 is also put in action, and in this case acts as an apparatus intercolated in the branch line. stations of the circuit N call stations of the circuit O W', and then to establish the communications between the two circuits, so that the stations may reach one another. The branch line N is put into communication with the register S when the two relays are switched from the circuit. If it is found necessary for any reason to separate the circuit N from the main circuit O YV and from the transmitting system, the plugs of the commutator U and of the finger-key T' may be taken out of hole 1 and inserted into h ole 2. The system of transmission and the circuit O W are thus thrown ont ofthe circuit and the register S'is switched into the circuit. A The current in the branch line now flows as follows, viz: From point N to galvanometer G', to commutator U', over plugged hole 2 therein to the register S', and from thence it passes to the ground.

When the finger-key T is depressed, the departing current of the branch line passes from battery B' to finger-key T', over plugged hole 2 It is now possible to hear when remotev therein to galvanometer G', to wire N of the branch circuit. The branch circuit has become in this case an independent circuit.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a telegraph apparatus for transmitting messages through a main line and branch line, and Vice versa, the combination of a relay, R', having its armature-lever provided with an extension, C', a contact, 7c, an insulating-strip,

o, spring-arm i, yielding conductor g, connected with said spring-wire i', and bindingpost h, the stops Z Z', the relay R2, having its armature provided with an extension, n', a contactplate, m, insulating layer e, yielding conductor g, connected with the contact-plate m, and binding-post h", the stops d d, line c0n neetion with the relays R R2 for main and branch electrical circuits, suitable batteries for the latter, finger-keys T T2, and commutators U Ul U3, all substantially as shown and described.

2. In a telegraph apparatus, the relay Rz, having its armature-lever provided with an extension, n', a contact-plate mounted on the extension and insulated from the armaturelever, a yielding electrical conductor, g', connected with the contact-plate, and a bindingpost, h', on the base of the relay, with the main and branch electrical circuits, batteries B' B2, finger-keys T T2, relay R', and commutators U U2 U3, all arranged substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two sub- 35 scribing witnesses.

JOSEPH KOLZER. Witnesses:

S. SPACKMAN, TH. PIETMANN 

